Delaware Stormwater-Municipalities regulations & environmental compliance analysis

Delaware Stormwater-Municipalities: What you need to know

Governing Law and Regulations

Stormwater regulations for municipal separate storm sewer systems (MS4s): 7 Delaware Regulations (Del. Reg.) 7201.9.1

Regulatory Agencies
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Delaware Department of Natural Resources and Environmental Control (DNREC)Division of Water

U.S. Environmental Protection Agency (EPA)Region 3

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Delaware is fully authorized to administer the National Pollutant Discharge Elimination System (NPDES) permit program and issues individual permits for Phase I and Phase II municipal separate storm sewer systems (MS4s). The state follows the federal requirements. See the national section STORMWATER —MUNICIPALITIES for more information on the federal MS4 stormwater permitting program.

Administration and enforcement. DNREC's NPDES stormwater regulations for MS4s are administered and enforced by DNREC's Division of Water. DNREC's sediment and stormwater regulations are administered by DNREC's Division of Water.


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